EP 0780356 B1 20000823 - Method for preparing a solution of an alkali salt of anthrahydroquinone
Title (en)
Method for preparing a solution of an alkali salt of anthrahydroquinone
Title (de)
Verfahren zur Herstellung einer Lösung eines Alkalisalzes von Anthrahydrochinon
Title (fr)
Procédé pour la préparation d'une solution d'un sel alcalin d'anthrahydroquinone
Publication
Application
Priority
JP 33381895 A 19951221
Abstract (en)
[origin: EP0780356A2] A method for preparing a solution of an alkali salt of anthrahydroquinone, which comprises reacting a solution of an alkali salt of 1,4-dihydro-9,10-dihydroxyanthracene with anthraquinone in the presence of an alkali.
IPC 1-7
IPC 8 full level
C07C 37/07 (2006.01); A01N 31/16 (2006.01); C07C 37/64 (2006.01); C07C 39/235 (2006.01)
CPC (source: EP US)
C07C 37/64 (2013.01 - EP US); C07C 2603/24 (2017.04 - EP US)
Citation (examination)
P.WANDELT: "The effect of 1,4-dihydro-9,10-dihydroxy-anthracene on soda and kraft cooking of pine", Paperi ja Puu - Papper och Trä, 1984, no. 11, pages 673 to 681
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0780356 A2 19970625; EP 0780356 A3 19970827; EP 0780356 B1 20000823; CA 2192924 A1 19970622; CA 2192924 C 20060815; DE 69609933 D1 20000928; DE 69609933 T2 20010301; JP 3804091 B2 20060802; JP H09169682 A 19970630; US 5750743 A 19980512
DOCDB simple family (application)
EP 96119643 A 19961206; CA 2192924 A 19961213; DE 69609933 T 19961206; JP 33381895 A 19951221; US 76646996 A 19961212